Tuesday, May 18, 2010

Page file size on machines with large amounts of memory

There is a rule of thumb that page file size (and swap space partition) should be 1.5 times the physical memory of the machine. Now that we have 64 bit machines with 16-64GB of memory this looks like an absurd.

  • We do not want to reserve so much disk space
  • It does not make sense to rely so heavily on disk 

I found two nice references in the internet regarding Linux and Windows


So my new rule of thumb page file should not be more than 70% full
Paging File\\% Usage Peak _Total < 70%

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